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Principal Cybersecurity Engineer

Leidos


Job Location:

Adelphi, MD - USA

Yearly Salary: USD 131300 - 237350
Posted: 29 September 2026 (Yesterday)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

Are you ready to provide technical leadership for a mission-critical cybersecurity environment supporting the Department of War (DoW)

Leidos is seeking a Principal Cybersecurity Engineer to support the C5ISR Center Cyber Security Service Provider (CSSP) a premier defensive cyber operations organization operating 24x7x365. The CSSP provides continuous monitoring threat detection incident response and vulnerability management across a complex multi-tenant enterprise environment.

As the Principal Cybersecurity Engineer you will serve as Leidos primary technical interface to the Government lead for Enterprise Cybersecurity. You will provide strategic and hands-on technical leadership across cybersecurity architecture engineering modernization and technology integration.

You will evaluate emerging cybersecurity technologies recommend and design enterprise solutions and lead feasibility studies proofs of concept pilot projects and other research and development initiatives designed to strengthen the customers cybersecurity posture.

Location: Hybrid - 3 days on site at Adelphi MD
Clearance: U.S. Citizenship with an active TS/SCI with SAP Eligibility
Required Certifications: CISSP

Primary Responsibilities:

  • Lead the design architecture integration and implementation of complex enterprise cybersecurity systems and supporting technologies.

  • Serve as a senior technical advisor to Government stakeholders and Leidos leadership on enterprise cybersecurity strategy architecture risk and modernization.

  • Assess organizational progress against cybersecurity strategies and develop recommendations aligned with mission objectives and stakeholder priorities.

  • Evaluate emerging cybersecurity technologies and lead feasibility studies proofs of concept pilot programs and technology assessments.

  • Assess enterprise cybersecurity risk including weaknesses in platforms access controls system configurations networks applications and data environments.

  • Provide engineering leadership for the design development and implementation of solutions that protect and monitor enterprise networks and systems.

  • Lead the development and integration of innovative cybersecurity solutions through collaboration with engineering operations cybersecurity Government and industry experts.

  • Identify security-relevant data technologies and capabilities across on-premises hybrid-cloud and multi-cloud environments and provide formal technical recommendations to stakeholders.

  • Guide cybersecurity modernization initiatives including the migration of services applications and data from on-premises environments to hybrid and multi-cloud architectures.

  • Engage with technology vendors evaluate solutions and recommend technologies for enterprise implementation.

  • Influence technical and organizational change by communicating complex cybersecurity concepts recommendations and approaches to technical and executive stakeholders.

Basic Qualifications:

  • Bachelors degree in Cybersecurity Computer Science Information Technology Engineering or a related technical discipline with 12 years of relevant IT/cybersecurity experience. Four additional years of relevant experience may be considered in lieu of a degree.

  • 4 years of cybersecurity engineering experience directly supporting the Federal Government as a Government or contractor employee.

  • Extensive experience developing and executing migration strategies for services applications or data moving from on-premises environments to hybrid or multi-cloud architectures.

  • Strong knowledge and operational experience with Federal cybersecurity requirements and frameworks including NIST FISMA and FedRAMP.

  • Deep understanding of cybersecurity architecture technical platforms threat management security controls and industry best practices.

  • Experience identifying security-relevant data and technologies across on-premises and cloud environments and developing technical solutions for evolving mission requirements.

  • Experience evaluating vendors designing technical solutions and selecting cybersecurity technologies for enterprise implementation.

  • Broad technical knowledge across enterprise IT systems engineering cybersecurity engineering IT lifecycle methodologies modernization and transformation.

  • Demonstrated ability to influence stakeholders and gain support for new technologies concepts practices and approaches.

  • Experience leading technical transformation and improving enterprise cybersecurity services and capabilities.

  • CISSP certification

  • U.S. citizenship with an activeTop Secret clearanceand eligibility to obtain a SCI.

  • Exceptional written and verbal communication skills with the ability to engage technical teams Government stakeholders and senior leadership.

Preferred Qualifications:

  • Active Top Secret/SCI clearance.

  • Additional cybersecurity certifications such as CISM CISSP-ISSEP GSLC or CCISO.

  • Knowledge of Agile project management principles and methodologies.

  • Experience supporting both classified and unclassified environments.

  • Experience supporting Security Operations Center (SOC) environments and multi-tenant cybersecurity operations.

If youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.

Original Posting:
September 1 2026

For U.S. Positions: While subject to change based on business needs Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $131300.00 - $237350.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.


Required Experience:

Staff IC


About Company

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Leidos is an innovation company rapidly addressing the world's most vexing challenges in national security and health. Our 47,000 employees collaborate to create smarter technology solutions for customers in these critical markets.

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